Welding helmet



FIG. 1 is a perspective view of a welding helmet showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

In the drawings, the features shown in broken lines in FIGS. 1-7 depict portions of the design that form no part of the claimed design. 

The ornamental design for a welding helmet, as shown and described. 